Which .25 for next build?

I'm leaning towards a 25x280AI right now. 25-06AI would be my 2nd choice. I have a good little 25-06rem that does well with 115vld's.

After this 25x280AI is done I'm going to do a 25grendel on a mini action with the 115vld's maybe try some lighter varmint type bullets as well.

@lancetkenyon I'm with you on blackjack! FBJB lol
 
FEENIX said:
I built my .257 WBY specifically to propel the heavies like the 131s, 133s/135s, and now the 145s.

View attachment 379240
View attachment 379241
View attachment 379242

Good luck with your project build.
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I took some measurements with the 145s; as seen below, CBTO touching the lands is 2.848" (average of 5) and COAL of 3.441"; I plan on starting at .020" off the lands as the baseline. I have plenty of magazine clearance.

1658576339337.png
 
lancetkenyon said:
I run a couple quarter bores.
25 Creedmoor pushing a 135 LR Hyb @ 2976fps
25 SST pushing a 133 Elite at 3200 (easy load, up to 3350 during testing with H1000)

Let me say this...do NOT count on 131 Blackjacks. I have had 2k paid for and on eternal backorder since Dec 2020. No response to a plethora of emails, texts to the owner, FB Messenger, etc. Which sucks, because until 8 months ago, I was still a Blackjack fan. Now, they can suck it, even if they ever make good on backorders.
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Thanks for sharing that. Glad there are other options. The Black Hole bullets Feenix posted look like a solid option as do the Berger's. The 25 Creed is temping due the the ease of gathering components and still has good number. Just thinking I may want more.
 
338weatherby said:
@FEENIX
I haven't heard of those Black Hole bullets until this thread. How are they for availability?
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He is a one-person shop, and I think he turns them as soon as an order is placed, a just-in-time concept. IIRC, it took him ~ 2 weeks for 2 boxes of 145s and a box of 168s as soon as he got going. You might want to ping him if he has some on the shelf already; I did not mind the wait as I am not in a hurry.
 
Quintus said:
I am starting to think the .257RPM might be an attractive option, but nothing can replace the 257WBY in my mind as the perfect 1/4.
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Define perfect 1/4, I had 257 wby mag, 25-06 and 257 Robert's. I still have .257 Robert's out of the 3. Recently acquired 250ai but no first hand experience in it except fireforming on paper.
 
Coldfinger said:
Define perfect 1/4, I had 257 wby mag, 25-06 and 257 Robert's. I still have .257 Robert's out of the 3. Recently acquired 250ai but no first hand experience in it except fireforming on paper.
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To me the 25 is a deer/antelope caliber maybe throw in predators and black bears. The Bee will take light bullets and give amazing PBR and if you want to chuck the new long heavies from a fast twist it has the capacity to be a very impressive long range option. Perfect is of course, quite subjective.
 
I don't want to feed another magnum but if I did I'd like to tinker with a 25x7prc. Ideally id set that chamber up to use a 7prc bushing die to do a "straight" neck down to 257. The 25-06 and it's relatives like the 25-06AI and 25x280AI do everything that I need currently especially paired with a fast twist barrel for the heavies.

I'm in no way knocking the 257wby or cases of similar volume.... I just don't want to use magnum primers and powder in a 257" that I could use in my 300prc.
 

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